CGraphicsConnectorItem.h

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/********************************************************************************
**  This file is part of the ICF Framework. Copyright (C) Witold Gantzke & Kirill Lepskiy
**  ICF Framework may be used under the terms of the LGPL License v. 2.1 by the Free Software Foundation.
********************************************************************************/
 
#pragma once
 
 
// Qt includes
#include <QtCore/QObject>
#include <QtWidgets/QGraphicsItem>
 
// ICF includes
#include <icmpstr/ISceneProvider.h>
 
 
namespace icmpstr
{
 
 
class CComponentSceneItem;
class CRegistryElementShape;
 
 
class CGraphicsConnectorItem:
        public QObject,
        public QGraphicsItem
{
    Q_OBJECT
 
public:
    typedef QGraphicsItem BaseClass;
 
    enum ConnectFlags
    {
        CF_FACTORY = 0x0001,
        CF_EMBEDDED  =0x0002
    };
 
    enum GeometricParams
    {
        GP_RADIUS = 4,
        GP_RADIUS2 = 8,
        GP_OFFSET = 12
    };
 
    CGraphicsConnectorItem(
                const icmpstr::ISceneProvider& sceneProvider,
                int connectFlags = 0,
                QGraphicsItem* parent = nullptr);
 
    void InitEnds(CRegistryElementShape* sourceShapePtr, CRegistryElementShape* destShapePtr);
 
    // reimplemented (QGraphicsItem)
    virtual int type() const;
    virtual QPainterPath shape() const;
    virtual bool contains(const QPointF& point) const;
 
protected:
    void Adjust();
 
    // reimplemented (QGraphicsItem)
    virtual QRectF boundingRect() const;
    virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget);
 
protected Q_SLOTS:
    void OnSourceRectMoved(const QRectF& rect);
    void OnDestRectMoved(const QRectF& rect);
    void OnSourceSelected(bool state);
    void OnDestSelected(bool state);
 
private:
    const icmpstr::ISceneProvider& m_sceneProvider;
 
    int m_connectFlags;
 
    QPolygonF m_connectionLine;
    QPointF m_touchPoint;
 
    QRectF m_sourceRect;
    QRectF m_destRect;
    bool m_isSourceSelected;
    bool m_isDestSelected;
};
 
 
} // namespace icmpstr